Eight out of 10 Americans celebrated the Easter holiday Sunday, according to the National Retail Federation. It is a day of great religious significance for the 63% of Americans who classify themselves as Christians, so many more people recognize aspects of the holiday. Easter also is a big donation day for U.S. churches, seeing the year’s highest church attendance rates. Beyond faith-based giving, consumer spending was expected to reach a total of $22.4 billion tied to the holiday.